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swarm/storage/mru: Renamed rest of MRU references

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This commit is contained in:
Javier Peletier
2018-09-30 09:43:10 +02:00
parent b35622cf3c
commit 83705ef6aa
19 changed files with 315 additions and 382 deletions
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124
swarm/api/http/server.go
View File

@ -31,7 +31,6 @@ import (
"net/http"
"os"
"path"
"regexp"
"strconv"
"strings"
"time"
@ -145,13 +144,13 @@ func NewServer(api *api.API, corsString string) *Server {
defaultMiddlewares...,
),
})
mux.Handle("/bzz-resource:/", methodHandler{
mux.Handle("/bzz-feed:/", methodHandler{
"GET": Adapt(
http.HandlerFunc(server.HandleGetResource),
http.HandlerFunc(server.HandleGetFeed),
defaultMiddlewares...,
),
"POST": Adapt(
http.HandlerFunc(server.HandlePostResource),
http.HandlerFunc(server.HandlePostFeed),
defaultMiddlewares...,
),
})
@ -458,44 +457,13 @@ func (s *Server) HandleDelete(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, newKey)
}
// Parses a resource update post url to corresponding action
// possible combinations:
// / add multihash update to existing hash
// /raw add raw update to existing hash
// /# create new resource with first update as mulitihash
// /raw/# create new resource with first update raw
func resourcePostMode(path string) (isRaw bool, frequency uint64, err error) {
re, err := regexp.Compile("^(raw)?/?([0-9]+)?$")
if err != nil {
return isRaw, frequency, err
}
m := re.FindAllStringSubmatch(path, 2)
var freqstr = "0"
if len(m) > 0 {
if m[0][1] != "" {
isRaw = true
}
if m[0][2] != "" {
freqstr = m[0][2]
}
} else if len(path) > 0 {
return isRaw, frequency, fmt.Errorf("invalid path")
}
frequency, err = strconv.ParseUint(freqstr, 10, 64)
return isRaw, frequency, err
}
// Handles creation of new mutable resources and adding updates to existing mutable resources
// There are two types of updates available, "raw" and "multihash."
// If the latter is used, a subsequent bzz:// GET call to the manifest of the resource will return
// the page that the multihash is pointing to, as if it held a normal swarm content manifest
//
// The POST request admits a JSON structure as defined in the mru package: `mru.updateRequestJSON`
// The requests can be to a) create a resource, b) update a resource or c) both a+b: create a resource and set the initial content
func (s *Server) HandlePostResource(w http.ResponseWriter, r *http.Request) {
// Handles feed manifest creation and feed updates
// The POST request admits a JSON structure as defined in the feeds package: `feeds.updateRequestJSON`
// The requests can be to a) create a feed manifest, b) update a feed or c) both a+b: create a feed manifest and publish a first update
func (s *Server) HandlePostFeed(w http.ResponseWriter, r *http.Request) {
ruid := GetRUID(r.Context())
uri := GetURI(r.Context())
log.Debug("handle.post.resource", "ruid", ruid)
log.Debug("handle.post.feed", "ruid", ruid)
var err error
// Creation and update must send mru.updateRequestJSON JSON structure
@ -505,19 +473,19 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *http.Request) {
return
}
view, err := s.api.ResolveResourceView(r.Context(), uri, r.URL.Query())
feed, err := s.api.ResolveFeed(r.Context(), uri, r.URL.Query())
if err != nil { // couldn't parse query string or retrieve manifest
getFail.Inc(1)
httpStatus := http.StatusBadRequest
if err == api.ErrCannotLoadResourceManifest || err == api.ErrCannotResolveResourceURI {
if err == api.ErrCannotLoadFeedManifest || err == api.ErrCannotResolveFeedURI {
httpStatus = http.StatusNotFound
}
RespondError(w, r, fmt.Sprintf("cannot retrieve resource view: %s", err), httpStatus)
RespondError(w, r, fmt.Sprintf("cannot retrieve feed from manifest: %s", err), httpStatus)
return
}
var updateRequest mru.Request
updateRequest.Feed = *view
updateRequest.Feed = *feed
query := r.URL.Query()
if err := updateRequest.FromValues(query, body); err != nil { // decodes request from query parameters
@ -527,13 +495,13 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *http.Request) {
if updateRequest.IsUpdate() {
// Verify that the signature is intact and that the signer is authorized
// to update this resource
// Check this early, to avoid creating a resource and then not being able to set its first update.
// to update this feed
// Check this early, to avoid creating a feed and then not being able to set its first update.
if err = updateRequest.Verify(); err != nil {
RespondError(w, r, err.Error(), http.StatusForbidden)
return
}
_, err = s.api.ResourceUpdate(r.Context(), &updateRequest)
_, err = s.api.FeedsUpdate(r.Context(), &updateRequest)
if err != nil {
RespondError(w, r, err.Error(), http.StatusInternalServerError)
return
@ -541,16 +509,16 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *http.Request) {
}
if query.Get("manifest") == "1" {
// we create a manifest so we can retrieve the resource with bzz:// later
// this manifest has a special "resource type" manifest, and saves the
// resource view ID used to retrieve the resource later
m, err := s.api.NewResourceManifest(r.Context(), &updateRequest.Feed)
// we create a manifest so we can retrieve feed updates with bzz:// later
// this manifest has a special "feed type" manifest, and saves the
// feed identification used to retrieve feed updates later
m, err := s.api.NewFeedManifest(r.Context(), &updateRequest.Feed)
if err != nil {
RespondError(w, r, fmt.Sprintf("failed to create resource manifest: %v", err), http.StatusInternalServerError)
RespondError(w, r, fmt.Sprintf("failed to create feed manifest: %v", err), http.StatusInternalServerError)
return
}
// the key to the manifest will be passed back to the client
// the client can access the view directly through its resourceView member
// the client can access the Feed directly through its Feed member
// the manifest key can be set as content in the resolver of the ENS name
outdata, err := json.Marshal(m)
if err != nil {
@ -563,41 +531,49 @@ func (s *Server) HandlePostResource(w http.ResponseWriter, r *http.Request) {
}
}
// Retrieve Swarm Feeds:
// bzz-resource://<id> - get latest update
// bzz-resource://<id>/?period=n - get latest update on period n
// bzz-resource://<id>/?period=n&version=m - get update version m of period n
// bzz-resource://<id>/meta - get metadata and next version information
// <id> = ens name or hash
// TODO: Enable pass maxPeriod parameter
func (s *Server) HandleGetResource(w http.ResponseWriter, r *http.Request) {
// HandleGetFeed retrieves Swarm Feeds updates:
// bzz-feed://<manifest address or ENS name> - get latest feed update, given a manifest address
// - or -
// specify user + topic (optional), subtopic name (optional) directly, without manifest:
// bzz-feed://?user=0x...&topic=0x...&name=subtopic name
// topic defaults to 0x000... if not specified.
// name defaults to empty string if not specified.
// thus, empty name and topic refers to the user's default feed.
//
// Optional parameters:
// time=xx - get the latest update before time (in epoch seconds)
// hint.time=xx - hint the lookup algorithm looking for updates at around that time
// hint.level=xx - hint the lookup algorithm looking for updates at around this frequency level
// meta=1 - get feed metadata and status information instead of performing a feed query
// NOTE: meta=1 will be deprecated in the near future
func (s *Server) HandleGetFeed(w http.ResponseWriter, r *http.Request) {
ruid := GetRUID(r.Context())
uri := GetURI(r.Context())
log.Debug("handle.get.resource", "ruid", ruid)
log.Debug("handle.get.feed", "ruid", ruid)
var err error
view, err := s.api.ResolveResourceView(r.Context(), uri, r.URL.Query())
feed, err := s.api.ResolveFeed(r.Context(), uri, r.URL.Query())
if err != nil { // couldn't parse query string or retrieve manifest
getFail.Inc(1)
httpStatus := http.StatusBadRequest
if err == api.ErrCannotLoadResourceManifest || err == api.ErrCannotResolveResourceURI {
if err == api.ErrCannotLoadFeedManifest || err == api.ErrCannotResolveFeedURI {
httpStatus = http.StatusNotFound
}
RespondError(w, r, fmt.Sprintf("cannot retrieve resource view: %s", err), httpStatus)
RespondError(w, r, fmt.Sprintf("cannot retrieve feed information from manifest: %s", err), httpStatus)
return
}
// determine if the query specifies period and version or it is a metadata query
if r.URL.Query().Get("meta") == "1" {
unsignedUpdateRequest, err := s.api.ResourceNewRequest(r.Context(), view)
unsignedUpdateRequest, err := s.api.FeedsNewRequest(r.Context(), feed)
if err != nil {
getFail.Inc(1)
RespondError(w, r, fmt.Sprintf("cannot retrieve resource metadata for view=%s: %s", view.Hex(), err), http.StatusNotFound)
RespondError(w, r, fmt.Sprintf("cannot retrieve feed metadata for feed=%s: %s", feed.Hex(), err), http.StatusNotFound)
return
}
rawResponse, err := unsignedUpdateRequest.MarshalJSON()
if err != nil {
RespondError(w, r, fmt.Sprintf("cannot encode unsigned UpdateRequest: %v", err), http.StatusInternalServerError)
RespondError(w, r, fmt.Sprintf("cannot encode unsigned feed update request: %v", err), http.StatusInternalServerError)
return
}
w.Header().Add("Content-type", "application/json")
@ -606,28 +582,28 @@ func (s *Server) HandleGetResource(w http.ResponseWriter, r *http.Request) {
return
}
lookupParams := &mru.Query{Feed: *view}
lookupParams := &mru.Query{Feed: *feed}
if err = lookupParams.FromValues(r.URL.Query()); err != nil { // parse period, version
RespondError(w, r, fmt.Sprintf("invalid mutable resource request:%s", err), http.StatusBadRequest)
RespondError(w, r, fmt.Sprintf("invalid feed update request:%s", err), http.StatusBadRequest)
return
}
data, err := s.api.ResourceLookup(r.Context(), lookupParams)
data, err := s.api.FeedsLookup(r.Context(), lookupParams)
// any error from the switch statement will end up here
if err != nil {
code, err2 := s.translateResourceError(w, r, "mutable resource lookup fail", err)
code, err2 := s.translateFeedError(w, r, "feed lookup fail", err)
RespondError(w, r, err2.Error(), code)
return
}
// All ok, serve the retrieved update
log.Debug("Found update", "view", view.Hex(), "ruid", ruid)
log.Debug("Found update", "feed", feed.Hex(), "ruid", ruid)
w.Header().Set("Content-Type", api.MimeOctetStream)
http.ServeContent(w, r, "", time.Now(), bytes.NewReader(data))
}
func (s *Server) translateResourceError(w http.ResponseWriter, r *http.Request, supErr string, err error) (int, error) {
func (s *Server) translateFeedError(w http.ResponseWriter, r *http.Request, supErr string, err error) (int, error) {
code := 0
defaultErr := fmt.Errorf("%s: %v", supErr, err)
rsrcErr, ok := err.(*mru.Error)